When you plug the AC Adapter into the laptop Charge led lights ON, when you push on the power button Power led lights ON, but your Samsung Notebook NP-R522 won’t boot, there is no display just a black screen.

Possible problem and the fixes steps:

Power circuit in wrong state; your laptop has static electric charge made Power Circuit in wrong state. Unplug AC adapter, take out the battery and hold down power button for 30 seconds, the static charge will dissipate. Plug the AC Adapter and turn on your laptop.

RAM or Hardware failure; your Samsung Notebook NP-R522 powers on, but there is no display just black screen with Power led light ON and cooling fan work. It’s possible the memory module (RAM) failed. In this case you can try cleaning / reseating or replacing memory module. If cleaning / replacing memory don’t help, try removing the hard drive, wireless card, keyboard, etc… In other words, disassemble the laptop to bare minimum and test again one by one, replace the faulty hardware.

Screen faulty or bad video cable connection; laptop turns on, but screen is black, with Power led and Hard Drive led lights ON. Test the laptop with an external monitor connected to the HDMI port, press the appropriate key to switch to it. If the external monitor works fine. In this case most likely you have a faulty screen or bad video cable connection. Check them and replace the faulty one.

Some electronics components on the motherboard failed; disassemble the laptop and Check electronics components continuity, Voltage and temperature with a Multimeter. Check Laptop Power System, you will need an electronic Schematic Diagram for Laptop Samsung Notebook NP-R522. The failed electronic component has to be replaced.

BIOS failed; if the Power System and electronics components on the motherboard are good, there is chance you have failed BIOS, reprogram or replace the BIOS chip.

When you plug the AC Adapter into the laptop, Charge led lights ON, but when you push on the power button, nothing happens, laptop won’t turn on, and Power led stays OFF.

Possible problem and the fixes steps:

Power circuits in wrong state; same procedure as problem 1 in first case above.

Hardware failure; Disassemble the laptop to bare minimum and test the hardware one by one, replace the faulty hardware.

Power button failed; Test Power Button ON/OFF Continuity with Multimeter, if there is no continuity when you push on the power button. The Power button has to be repaired or replaced.

Some electronics components on the motherboard failed; same procedure as problem 4 in first case above.

BIOS failed; Reprogram or replace the BIOS chip.

Motherboard dead. The motherboard has to be replaced.

Third case laptop Samsung Notebook NP-R522 won’t turn on at all

When you plug the AC Adapter into the laptop there is no lights. When you push on the power button, nothing happens, all led lights OFF, and there are no sounds. The laptop appears to be completely dead.

Possible problem and the fixes steps:

The AC adapter failed; the battery has no charge left, the motherboard doesn’t receive any power from the AC Adapter. In this case try with another charger or check the AC adapter with a Multimeter. If it’s dead, replaced with a new one.

Power circuit in wrong state; same procedure as problem 1 in first case above.

Some electronics components on the motherboard failed, in most case the power jack failed or there are a failed SMD capacitor or MOSFET directly after power jack. Same procedure as problem 5 in first case above.